The Little Tiny Girl

With blondes it is his custom to praise their gentleness, with brunettes their constancy, with white-haired ones their sweetness.  In winter he wants plumpness, in summer he wants leanness.  The tall woman is stately, the tall woman is stately; the little tiny girl, the little tiny girl, the little tiny girl, the little tiny girl, the little tiny girl, the little tiny girl, the little tiny girl, the little tiny girl, the little tiny girl is always charming, is always charming, is always charming; he makes conquests among old women for the pleasure of adding them to the list.

First, apologies that this is a bit late. Due to our conversation last class about Faust's lust for Margaret/Gretchen, the innocent, "little tiny girl," I was struck by this passage.  Leporello categorizes the women with whom his master has relations but stresses "the little tiny girl."  I would like to explore the reason why powerful men desire naive, young girls.  Are they attracted by the qualities that the girls possess because they can never regain them?  How is the "little tiny girl" a conquest when she can physically be won rather effortlessly?